Release date: 2010-05-17
This release contains a variety of fixes from 8.0.24. For information about new features in the 8.0 major release, see Section E.253.
The PostgreSQL community will stop releasing updates for the 8.0.X release series in July 2010. Users are encouraged to update to a newer release branch soon.
A dump/restore is not required for those running 8.0.X. However, if you are upgrading from a version earlier than 8.0.22, see Section E.231.
Enforce restrictions in plperl
using an opmask applied to
the whole interpreter, instead of using Safe.pm
(Tim Bunce, Andrew Dunstan)
Recent developments have convinced us that Safe.pm
is too
insecure to rely on for making plperl
trustable. This
change removes use of Safe.pm
altogether, in favor of using
a separate interpreter with an opcode mask that is always applied.
Pleasant side effects of the change include that it is now possible to
use Perl's strict
pragma in a natural way in
plperl
, and that Perl's $a
and $b
variables work as expected in sort routines, and that function
compilation is significantly faster. (CVE-2010-1169)
Prevent PL/Tcl from executing untrustworthy code from
pltcl_modules
(Tom)
PL/Tcl's feature for autoloading Tcl code from a database table
could be exploited for trojan-horse attacks, because there was no
restriction on who could create or insert into that table. This change
disables the feature unless pltcl_modules
is owned by a
superuser. (However, the permissions on the table are not checked, so
installations that really need a less-than-secure modules table can
still grant suitable privileges to trusted non-superusers.) Also,
prevent loading code into the unrestricted “normal” Tcl
interpreter unless we are really going to execute a pltclu
function. (CVE-2010-1170)
Do not allow an unprivileged user to reset superuser-only parameter settings (Alvaro)
Previously, if an unprivileged user ran ALTER USER ... RESET
ALL
for himself, or ALTER DATABASE ... RESET ALL
for
a database he owns, this would remove all special parameter settings
for the user or database, even ones that are only supposed to be
changeable by a superuser. Now, the ALTER
will only
remove the parameters that the user has permission to change.
Avoid possible crash during backend shutdown if shutdown occurs
when a CONTEXT
addition would be made to log entries (Tom)
In some cases the context-printing function would fail because the current transaction had already been rolled back when it came time to print a log message.
Update PL/Perl's ppport.h
for modern Perl versions
(Andrew)
Fix assorted memory leaks in PL/Python (Andreas Freund, Tom)
Prevent infinite recursion in psql when expanding a variable that refers to itself (Tom)
Ensure that contrib/pgstattuple
functions respond to cancel
interrupts promptly (Tatsuhito Kasahara)
Make server startup deal properly with the case that
shmget()
returns EINVAL
for an existing
shared memory segment (Tom)
This behavior has been observed on BSD-derived kernels including macOS. It resulted in an entirely-misleading startup failure complaining that the shared memory request size was too large.
Update time zone data files to tzdata release 2010j for DST law changes in Argentina, Australian Antarctic, Bangladesh, Mexico, Morocco, Pakistan, Palestine, Russia, Syria, Tunisia; also historical corrections for Taiwan.